CN203703017U

CN203703017U - Improved transmission device

Info

Publication number: CN203703017U
Application number: CN201420024954.1U
Authority: CN
Inventors: 燕成祥
Original assignee: HUNAN GRAND-PRO ROBOT TECHNOLOGY Co Ltd
Current assignee: HUNAN GRAND-PRO ROBOT TECHNOLOGY Co Ltd
Priority date: 2014-01-16
Filing date: 2014-01-16
Publication date: 2014-07-09
Anticipated expiration: 2024-01-16

Abstract

The utility model discloses an improved transmission device driven by a drive device to drive a driven part. The improved transmission device comprises a worm, a planetary gear set, and an output component with the two ends connected with the planetary gear set and a wheel respectively. In the power transmitting process, the worm is driven by the drive device to rotate around a first imaginary axis, the planetary gear set is driven by the worm to rotate around a second imaginary axis orthogonal to the first imaginary axis, and the output component is driven by the planetary gear set to rotate around the second imaginary axis and drive the driven part to rotate. According to the improved transmission device, noise generated in the power transmitting process can be lowered, the device structure is simplified, the friction energy loss can be reduced, and the device is easy to maintain.

Description

A kind of driving improving device

Technical field

The utility model relates to a kind of device, refers in particular to a kind of drive that is subject to drive unit and then drives a Passive part and simplified construction and reduce noise generated driving improving device in transmission of power.

Background technique

Fig. 1 is the generalized section of known transmission mechanism, current people are on duty most of the time, for floor-dust is processed, if use and seem very painstaking with vacuum cleaner manually, therefore, had on the market the invention of self-propelling vacuum cleaner, it is hand-held cleaners handle and pushing in ground smooth the head of vacuum cleaner completely manually, quite easily convenient in the use, not only becoming the market mainstream has now been also the indispensable necessity of family.And the power major part of this self-propelled suction cleaner is from trailing wheel, it can make vacuum cleaner be located at vacuum cleaner inside from 9 of the driving mechanisms of walking, and utilizing motor 91 power transmission to trailing wheel, vacuum cleaner to be walked about, driving mechanism 9 has utilized a motor 91 to drive the commutating tooth wheels 92 of a deceleration; 92 of these commutating tooth wheels comprise always female connector and are located at motor 91 and export the active spur wheel 921 on axostylus axostyle 911, initiatively spur wheel 921 is subject to motor 91 to drive afterwards and drive the driven spur wheel 922 that a number of teeth is more and be engaged with, on central shaft due to driven spur wheel 922, be installed with one with synchronous, the homodromal helical worm 93 of driven spur wheel 922, this helical worm 93 can drive the driven gear 94 engaging with it; Therefore, the output axostylus axostyle 95 that driven gear 94 is attached at respectively driven gear 94 and a trailing wheel (not shown) center by two ends drives this trailing wheel rotation, and drives self-propelled suction cleaner (not shown) to move.But through looking into, the driving mechanism 9 of this kind of existing articles for use is the active spur wheels 921 that directly utilize the number of teeth less, by the transmission of power of motor 91 to the more driven spur wheel 922 of the number of teeth, owing to there being high reduction speed ratio between the two, and gear 921,922 flanks contact and belong to the interaction effect of patting when transferring power each other, therefore cannot be in the uniform transferring power of each time point contacting, so this kind utilizes commutating tooth wheels 92 to slow down and the driving mechanism 9 that transmits motor 91 power easily produces noise; The driving mechanism 9 that noise is less as wished to get, the design of the commutating tooth wheels 92 of its deceleration is comparatively complicated, the gear quantity using also can increase, and then the difficulty of increase assembling and the cost of manufacture, in maintenance, be also not easy, the weight of overall driving mechanism 9 also increases thereupon, also can affect the performance performance that self-propelled suction cleaner moves, it is had a greatly reduced quality in practicability, and this is to be those skilled in the art and Consumer's utmost point wish breakthrough part.

Model utility content

For solving above-mentioned the deficiencies in the prior art part, the utility model main purpose is to provide a kind of driving improving device, and it reduces the noise producing in transmission of power, to overcoming difficulty of the prior art.

To achieve these goals, the technical solution of the utility model is as follows:

A kind of driving improving device, is driven by a drive unit and then drives a Passive part, it is characterized in that, described driving improving device comprises:

One worm screw, described worm screw is connected with described drive unit output shaft through the first imaginary axis in worm screw by one;

One planetary gear set, be arranged at described worm screw top and middle be provided with one with orthogonal the second imaginary axis of described the first imaginary axis, described planetary gear set comprises a sun gear unit, described sun gear unit has a circular base being set on described the second imaginary axis, one peripheral wall being extended along described Passive part direction by described basal wall periphery, the outside of described peripheral wall be formed with one with the external gear of described worm meshing, described basal wall is provided with a sun gear being set on described the second imaginary axis in described Passive part direction, described sun gear unit also includes an interior leg coordinating with described peripheral wall inner side surface, on described interior leg interior annular circumference, be provided with ring gear, and on the internal face of described interior leg, be also provided with multiple around described sun gear and with described sun gear, the planetary pinion of ring gear engagement,

One output link, described output link connects described planetary gear set and Passive part by the second imaginary axis.

Further, described basal wall, peripheral wall, external gear and sun gear are one-body molded.

Further, described output link has a circular substrate centered by described the second imaginary axis, described circular substrate is provided with multiple drive shaft rods towards a side of described planetary gear set, described substrate is provided with an output axostylus axostyle towards described Passive part one side, described multiple drive shaft rod respectively axle is located in corresponding planetary axis hole, and described output axostylus axostyle is fixed on described Passive part.

Further, described substrate is also provided with a perforation towards described planetary gear set Yi Ce center, and described perforation is connected with described the second imaginary axis.

Further, described driving improving device also includes a pole, and described pole axle is located in the central shaft hole of described perforation and described sun gear.

The driving improving device that the utility model provides, can reduce the noise producing in transmission of power, has simplified device structure, has reduced the energy dissipation that rubs, and makes device be easier to C&M.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment's technological scheme, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the generalized section of known transmission mechanism;

Fig. 2 is the utility model sectional perspective exploded view;

Fig. 3 is that the utility model Fig. 2 is by the three-dimensional exploded view of Passive part and sun gear unit decomposition;

Fig. 4 is the sectional perspective exploded view of relative position relation between the utility model worm screw, planetary gear set, output link and pole;

Fig. 5 is the sectional view of the utility model planetary gear set along I-I cutting line in Fig. 4;

Reference character: 9-driving mechanism; 91-motor; 911-exports axostylus axostyle; 92-commutating tooth wheels; 921-is spur wheel initiatively; The driven spur wheel of 922-; 93-helical worm; 94-driven gear; 95-exports axostylus axostyle; 1-driving improving device; 11-pedestal; The left shell of 111-; The right shell of 112-; 114-right bearing; 12-drive unit; 13-Passive part (left rear wheel); 2-worm screw; 3-planetary gear set; 31-sun gear unit; 311-basal wall; 312-peripheral wall; 313-external gear; 314-sun gear; Leg in 315-; 316-ring gear; 317-bearing portion; 318-axis hole; 319-room; 32-planetary pinion; 321-axis hole; 4-output link; 41-substrate; 42-drive shaft rod; 43-exports axostylus axostyle; 431-end; 44-perforation; 5-pole; 81-the first imaginary axis; 82-the second imaginary axis.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.

Fig. 2, Fig. 3, Fig. 4 and Fig. 5 are respectively the utility model sectional perspective exploded view, the utility model Fig. 2 is by the three-dimensional exploded view of Passive part and sun gear unit decomposition, the utility model worm screw, planetary gear set, between output link and pole, the sectional perspective exploded view of relative position relation and the utility model planetary gear set are along the sectional view of I-I cutting line in Fig. 4, driving improving device of the present utility model is arranged on (not shown) on the self-propelled suction cleaner of a rear wheel drive in a preferred embodiment, and be subject to one to be arranged on shell of the dust collector inside and to there is left shell 111, both drive units 12 that are installed in the pedestal 11 of containing space of driving improving device 1 that form that combine of right shell 112 drive, left shell 111 is respectively equipped with left bearing (not shown) and right bearing 114 with right shell 112, and then drive vacuum cleaner left rear wheel 13 and drive vacuum cleaner walking, and it changes in example as off hind wheel or front-wheel or vacuum cleaner also can be any suitable toy vehicle or other toolroom machines are replaced, illustrate take vacuum cleaner left rear wheel 13 as one Passive parts 13 at the present embodiment, and take vacuum cleaner direct of travel as front, and driving improving device 1 is positioned at the right-hand Passive part 13 that drives of Passive part 13, and this driving improving device 1 includes a worm screw 2, one planetary gear set 3, one output link 4, one pole 5.

Aforesaid worm screw, described worm screw 2 is connected with drive unit 12 output shafts through the first imaginary axis 8 in worm screw 2 by one, and drive unit 12 is a motor in the present embodiment, but not as limit.

An aforesaid planetary gear set 3, comprise a sun gear unit 31, and sun gear unit 31 have one around with the circular base 311 of coaxial the second imaginary axis 82 rotations of left rear wheel 13, one is matched with basal wall 311 and defines a peripheral wall 312 of a room 319 towards left extension by basal wall 311 peripheries, the external gear 313 that one outer side surface by this peripheral wall 312 outwards forms, one is arranged in this room 319 and is installed in the sun gear 314 of basal wall 311 left surfaces, one immediately at the interior leg 315 of these peripheral wall 312 inner side surfaces, one is formed on the ring gear 316 on these interior leg 315 inner side surfaces, the one right flank center by this basal wall 311 is to the bearing portion 317 of right-hand extension, wherein, the second imaginary axis 82 and the first imaginary axis 81 are orthogonal, and external gear 313 is engaged with each other with worm screw 2, and a middle heart-shaped axis hole 318 of sun gear 314, in addition, basal wall 311, peripheral wall 312, external gear 313, and sun gear 314 is to be made by integrated, and that planetary gear set 3 also includes is multiple around sun gear 314 and the planetary pinion 32 engaging with sun gear 314, ring gear 316 respectively, each planetary pinion 32 center is formed with an axis hole 321, it should be noted that, the quantity of planetary pinion 32 is not limited, can be only one or multiple, as for running through of pedestal 1 left shell 111 with the right bearing (not shown) of right shell 112 and right bearing 114 on be formed with respectively with the second imaginary axis 82 and coaxially and respectively run through.

An aforesaid output link 4, there is a circular substrate 41 centered by the second imaginary axis 82, multiple by substrate 41 right flank bias and equal angles interval diffusedly to the drive shaft rod 42 of right-hand extension, and one by substrate 41 left surface centers to left extend output axostylus axostyle 43, the central shaft of its substrate 41 and output axostylus axostyle 43 is formed with a perforation 44 online, drive shaft rod 42 is that axle is located in the axis hole 321 of planetary pinion 32, and output axostylus axostyle 43 has an end 431, this end 431 is the centers that are fixed in Passive part 13 right flanks, and the left bearing (not shown) of pedestal 11 provides circular substrate 41 axles of output link 4 to establish.

An aforesaid pole 5, is the central shaft hole 318 that axle is located at perforation 44 and sun gear 314, to strengthen the stability of output link 4 and 31 combinations of sun gear unit.

Driving mechanism of the present utility model by drive unit 12 utilize worm screw 2 around the first imaginary axis 81 rotations and drive external gear 313 around the second imaginary axis 82 rotations, as in Fig. 5 with counterclockwise direction rotation; Sun gear 314 is synchronous around the second imaginary axis 82 rotations and drive the reverse rotation of planetary pinion 32, as in Fig. 5 with clockwise direction rotation; Planetary pinion 32 coordinates ring gear 316 ground revolving round the sun around the second imaginary axis 82 towards sun gear 314 senses of rotation; The output axostylus axostyle 43 that is set in the drive shaft rod 42 meeting driver output members 4 of planetary pinion 32 axis holes 321 revolves round the sun direction around the second imaginary axis 82 rotations with planetary pinion 32; Passive part 13 is output that axostylus axostyle 43 drives and around the second imaginary axis 82 rotations; Worm screw 2 is with the combination of external gear 313 and in each time point that flank contacts each other, low friction and slow down equably and transmit its power to external gear 313; Sun gear 314 drives planetary pinion 32, the noise producing while effectively constraining transmission due to sun gear 314 through the deceleration of certain degree.The utility model uses the planetary gear set 3 of four planetary pinions 32, and the structure of this kind of simplification can reduce the frictional energy consume of all kinds of rotary members, is easier to C&M.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all any modifications of doing, be equal to replacement etc., within all should being included in protection domain of the present utility model in protection domain of the present utility model.

Claims

1. a driving improving device, is driven by a drive unit and then drives a Passive part, it is characterized in that, described driving improving device comprises:

2. a kind of driving improving device according to claim 1, is characterized in that, described basal wall, peripheral wall, external gear and sun gear are one-body molded.

3. a kind of driving improving device according to claim 1, it is characterized in that, described output link has a circular substrate centered by described the second imaginary axis, described circular substrate is provided with multiple drive shaft rods towards a side of described planetary gear set, described substrate is provided with an output axostylus axostyle towards described Passive part one side, described multiple drive shaft rod respectively axle is located in corresponding planetary axis hole, and described output axostylus axostyle is fixed on described Passive part.

4. a kind of driving improving device according to claim 3, is characterized in that, described substrate is also provided with a perforation towards described planetary gear set Yi Ce center, and described perforation is connected with described the second imaginary axis.

5. a kind of driving improving device according to claim 4, is characterized in that, described driving improving device also includes a pole, and described pole axle is located in the central shaft hole of described perforation and described sun gear.